• 제목/요약/키워드: On-board Battery

검색결과 115건 처리시간 0.032초

니켈카드뮴 축전지의 성능시험 분석 (An Analysis of Performance Test Results for Nickel-Cadmium Battery)

  • 온정근;김명룡;김원경;홍용기
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2003년도 추계학술대회 논문집(III)
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    • pp.600-605
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    • 2003
  • Battery of rolling stock is a very important device as power supply at starting and emergency control. This paper analyzes the quality of Ni-Cd battery by means of performance test. Ni-Cd battery have suitable and stable properties. That is very stable to discharge on low temperature state and very easy to manage and repair. This paper confirm the performance and property of Ni-Cd battery on low temperature environment by the performance test and estimate the life-cycle of Ni-Cd battery on board at rolling-stock by the life-test and the using-test.

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NEV용 스마트 Off-Board 충전시스템 설계 (Design of Smart Off-Board Charge System for Neighborhood Electric Vehicle)

  • 박성일;이정기
    • 한국전자통신학회논문지
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    • 제8권10호
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    • pp.1499-1504
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    • 2013
  • 급격한 원유가격 상승과 환경 친화적 차량에 대한 수요가 증가하면서 전기자동차에 대한 연구개발이 활발히 진행되고 있으며, 특히 근거리 전기자동차(NEV)는 양산 가능성이 매우 높은 무공해 차량으로 관련 기술에 대한 개발이 시급히 요구되는 시점이다. 본 논문에서 연구하고자 하는 중대형 2차전지 On-Board 충전기는 우주항공 및 일반 산업 분야에서도 충분히 응용가능한 요소 기술이고, Off-Board 스탠드형 충전기는 향후 활성화될 충전 인프라 구축 사업에 활용할 수 있을 것으로 예상된다.

플러그인 하이브리드 및 전기 자동차 고압배터리 전압 측정 방법 (An Approach for High Voltage Battery Voltage Sensing of Plug-In Hybrids and Battery Electric Vehicle)

  • 권용성
    • 전기학회논문지
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    • 제68권1호
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    • pp.140-144
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    • 2019
  • This paper proposes an approach for measuring voltage of high voltage(HV) battery of plug-in hybrid electric vehicle(PHEV) and battery electric vehicle(BEV). The proposed methods use isolation resistor and isolation amplifier in order to measure high voltage which should be electrically separated from measuring circuit. In terms of practical applications their advantages and disadvantage are discussed and key design points are addressed by simulations. More importantly, the proposed methods are applicable to various applications such as on-board charger, inverter and battery management system (BMS) which are directly connected to HV battery in PHEV and BEV.

Towards a reduced order model of battery systems: Approximation of the cooling plate

  • Szardenings, Anna;Hoefer, Nathalie;Fassbender, Heike
    • Coupled systems mechanics
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    • 제11권1호
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    • pp.43-54
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    • 2022
  • In order to analyse the thermal performance of battery systems in electric vehicles complex simulation models with high computational cost are necessary. Using reduced order methods, real-time applicable model can be developed and used for on-board monitoring. In this work a data driven model of the cooling plate as part of the battery system is built and derived from a computational fluid dynamics (CFD) model. The aim of this paper is to create a meta model of the cooling plate that estimates the temperature at the boundary for different heat flow rates, mass flows and inlet temperatures of the cooling fluid. In order to do so, the cooling plate is simulated in a CFD software (ANSYS Fluent ®). A data driven model is built using the design of experiment (DOE) and various approximation methods in Optimus ®. The model can later be combined with a reduced model of the thermal battery system. The assumption and simplification introduced in this paper enable an accurate representation of the cooling plate with a real-time applicable model.

NEV용 1.5[kW]급 저가형 충전기 개발에 관한 연구 (A Study on Development of 1.5 [kW] Low-cost Battery Charger for NEVs(Neighborhood Electric Vehicles))

  • 이찬송;정진범;이백행;허진
    • 전기학회논문지
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    • 제61권4호
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    • pp.574-579
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    • 2012
  • In this paper, the battery charger developed which is satisfy by the characteristics of the rapid control and reduce the cost of the charger. analog-digital mixed mode controller developed with dedicated IC for PWM control and low-performance micro-processor is using for the operation control of charger. The low-cost NEV charger developed to verify the performance and usability is verified with charging battery experiment by of using developed charger.

전기자동차용 고효율 무선 온보드 충전기의 설계 (Design of the High Efficiency Wireless On-Board Charger for Electric Vehicles)

  • 트란덕홍;부반빈;최우진
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2015년도 추계학술대회 논문집
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    • pp.27-28
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    • 2015
  • In this paper a high efficiency wireless on-board charger for Electric Vehicle (EV) is proposed and the theoretical analysis based on the two-port network model to come up with suitable design for the battery charge application is presented. The proposed Wireless Power Transfer (WPT) method has adopted four-coil system with air core and its superior performance is proved by comparing it to the conventional two-coil system by the mathematical analysis. In addition, since the proposed WPT converter is able to operate at an almost constant frequency regardless of the load, CC/CV charge of the battery can be simply implemented. A 6.6kW prototype is implemented with 20cm air gap to prove the validity of the proposed method. The experimental results show that the dc to dc conversion efficiency of the proposed system achieves 97.08% at 3.7 kW.

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계층적 배터리 관리 시스템 시뮬레이션 기술 개발 (Development of Simulator for Hierarchical Battery Management System)

  • 강현우;안성호;김동균
    • 대한임베디드공학회논문지
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    • 제8권4호
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    • pp.213-218
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    • 2013
  • In this research, we report on the development of simulation system for performance verification of BMS(Battery Management System) which is utilized in electric vehicles. In the industrial circles, a manufacturer of BMS typically tests their system with real battery packs. However, it takes a long time to test all functions of BMS. Here, we develop BMU(Battery Managament Unit) as an embedded board, which will be installed in electric vehicle for controlling battery packs. All other environment factors for testing BMU are developed in softwares in order to reduce the term of test. Especially, the proposed system consists of cell simulator and CMU(Cell Management Unit) simulator which simulate real battery cells and control battery cells. These simulators enable the BMU to test more battery cells. In addition, proposed system provides diagnosis program in order to diagnose and monitor the condition of BMS which makes the test of BMS more easily. In order to verify the performance of the developed simulator, we have performed the experiment with real battery packs and our simulator. Through comparing two results of experiments, we verify that developed simulator shows better performance in terms of less amount of testing duration though having high reliability.

새로운 전기 자동차 온보드 충전기용 3-포트 컨버터 (A Novel Three-Port Converter for the On-Board Charger of Electric Vehicles)

  • 사기르 아민;최우진
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2017년도 추계학술대회
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    • pp.111-112
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    • 2017
  • This paper presents a novel three-port converter for the OnBoard Charger of Electric Vehicles by using an impedance control network. The proposed concept is suitable for charging a main battery and an auxiliary battery of an electric vehicle at the same time due to its power handling capability of the converter without additional switches. The power flow is managed by the phase angle (${\Theta}$) between the ports whereas voltage at each port is controlled by the asymmetric duty cycle and the phase shift (${\Phi}$) between the inverter lags controlled by the impedance control network. The proposed system has a capability of achieving zero voltage switching (ZVS) and zero current switching (ZCS) at all the switches over the wide range of input voltage, output voltage and output power. The feasibility of the proposed system is verified by the PSIM simulation.

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전력 변환 장치 효율 개선을 위한 손실 분석 연구 (Loss Analysis of Power Conversion Equipment for Efficiency Improvement)

  • 김민국;우동균;이병국;김남준;김종수
    • 전력전자학회논문지
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    • 제19권1호
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    • pp.80-90
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    • 2014
  • This paper suggests loss analysis and calculation methods for efficiency improvement of power conversion equipment in detail. The detailed loss analysis and calculation has been conducted for 3.3kW On-board Battery Charger considering temperature condition. The validity of the analysis and calculation method is verified by simulation model.

LLC 공진형 컨버터를 적용한 전기자동차 고압배터리 충전기 개발 (Development of Battery Charger for Electric Vehicle using the LLC Resonant Converter)

  • 김경만;유종욱;김태권;강찬호;전태원
    • 전력전자학회논문지
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    • 제18권5호
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    • pp.443-447
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    • 2013
  • This paper deals with LLC resonant converter of on-board charger for electric vehicle charging. Generally, the on-board charger must have a very widely charging voltage, higher efficiency, higher power factor, lower volume and lower weight. For reducing the switching losses, voltage and current stress of the device, the on-board charger is apply the half-bridge LLC resonant converter topology. To have a wide voltage range, it is design the hardware parameters and determine the switching frequency range of the LLC resonant converter. The experimental results show a wide charge voltage.